Liar #1. Judd.
I have to admit, I thought Judd was going to get the boot because (with the additional private immunity clue), he "knew too much." Get him out before he finds the idol, or at least get him to feel vulnerable enough to cough it up at Tribal Council.
Well, he confesses that he's not very good at keeping secrets. So that's why he shows the clue to Stephanie. Then we see that he's dumb enough to (a) lie to the others about the clue, taking no precautions that Stephanie would know (and later confirm?) he lied, and (b) parade around the jungle looking UP, not DOWN - contrary to his advice.
About (a), maybe he and Stephanie were in cahoots. If so, does she stick with Judd and keep her million-dollar-smile mouth shut? Or does she pipe up WHEN Gary exposes Judd as a liar. (WOW. Did you see how big and round Judd's eyes were when he todd Jeff that he hasn't lied in this game?) I think she'll drop Judd like a bad habit.
For (b), believe me when I say my first thought was that it would be a great idea to tail Judd. Still, I give Gary a lot of credit. He would have gotten extra credit if he yelled, "Judd, watch your step!" as they were looking around.
Liar #2. Jamie.
Again, involving Gary. This one will be tough for Gary to prove. The best he can do - maybe enough - is to point out that Jamie's name didn't show up on a ballot. I think Jamie is on thin ice to start with, which makes him less believable. For his part, Gary's perceived to be a physical threat. Fair to say, Plan A, Plan B, and Plan C was to boot off Gary this time. Does that create a little resentment - something that will cloud others' reason?
It will be interesting to see how these things play out. Chances are, one of these three will be voted off. It won't be Lydia. (I'll spare you my anti-Lydia diatribe. At least for now. ... You're welcome.)